Abstract: A disc brake assembly comprises an anchor bracket having a pair of arms, a caliper supported on the bracket and a non-rotatable vehicle component having a pair of lugs, each of the lugs provided with a non-threaded opening formed therethrough. The non-threaded openings receive fasteners installed in threaded openings of the bracket to secure the vehicle component to the bracket. The bracket includes on at least one of the arms a first shoulder at a transition between the first and second portions thereof. The vehicle component includes on at least one of the lugs a second shoulder having a shape which is generally complimentary to the shape of the first shoulder. When the vehicle component and bracket are secured together, selected surfaces of the first and second shoulders contact each other to substantially prevent movement of the bracket relative to the vehicle component.

Abstract: A brake pedal unit for coupling to a brake pedal includes a housing and a pedal simulator housed within a simulation chamber formed in the housing. The pedal simulator includes a spring for providing force feedback. A first piston is mounted in the housing. The first piston is operable to generate brake actuating pressure at a first pressure output. A second piston is mounted in the housing. The first piston is operable to generate brake actuating pressure at a second pressure output. An input piston is connected to operate the pedal simulator during a normal braking mode, and wherein the input piston is coupled to actuate the first and second pistons during a manual push-though mode.

Abstract: A brake clip adapted for use in a disc brake assembly comprises a brake clip configured to be disposed between an anchor bracket and at least one brake pad of the disc brake assembly. The brake clip has at least one tab extending therefrom which is configured to initially contact and prevent the at least one brake pad from falling free prior to installation of the disc brake assembly on a vehicle.

Abstract: A disc brake assembly having an anchor bracket, a disc type of service brake assembly having a first brake caliper configured to be secured to the anchor bracket; and an electric disc type of parking and emergency brake assembly having a second brake caliper configured to be secured to the anchor bracket.

Abstract: A plunger assembly for use as a pressure source for a brake system includes a housing having first and second ports. A motor is mounted on the housing for driving an actuator. A piston is connected to the actuator. The piston is slidably mounted within the housing. The piston pressurizes a first chamber when the piston is moving in a first direction to provide fluid out of the first port. The piston pressurizes a second chamber when the piston is moving in a second direction to provide fluid out of the second port.

Abstract: A disc brake assembly having a guide pin disposed in a bore of an anchor bracket such that a guide pin axis is offset relative to a bore axis whereby there is provided at least one defined point of contact between only a portion of the guide pin and a portion of an inner surface of the bore. The guide pin includes at least one slot having a member, which is formed separate from the guide pin, and disposed therein to bias the guide pin in the bore thereby offsetting the guide pin axis relative to the bore axis. The member includes a first member formed from an elastomeric material and a second member formed from a metal material, wherein the second member is configured to retain the member in the slot.

Abstract: A pump cartridge for use in a hydraulic braking system includes a sleeve having an outer surface and an inner bore. A piston has a first portion that is coaxially received within the sleeve inner bore. A second portion of the piston extends from the sleeve and is configured to reciprocate the piston first portion relative to the sleeve in response to rotation of an eccentric. A retainer engages the sleeve and is configured to maintain the first portion of the piston within the sleeve inner bore. A filter assembly is formed as a separate component and has a bore configured to permit the piston second portion to extend through the filter bore.

Abstract: A damping element for attenuating hydraulic pressure pulses is integrated into a hydraulic chamber of a motor vehicle hydraulic system. The damping element includes a end cap support body and a membrane that fits over a portion of the support body. The membrane has a first side facing towards a source of hydraulic fluid and a second side facing away from the hydraulic fluid source. At least one space is provided between the second side of the membrane and the end cap support body to allow for deformation of the membrane under hydraulic pressure. The membrane has a collar with a lip seal provided for fitting into place on the wall of the hydraulic chamber. At least one second space for receiving hydraulic fluid is defined between the lip seal and a region of the membrane opposite the lip seal.

Abstract: A master cylinder includes a housing and a first secondary piston disposed in the housing. The first secondary piston cooperates with the housing to define a first secondary chamber which changes volume as the first secondary piston moves in the housing. A second secondary piston is disposed in the housing and cooperates with the housing to define a second secondary chamber which changes volume as the second secondary piston moves in the housing. A stepped primary piston is disposed in the housing. The primary piston cooperates with the housing to define a primary chamber which changes volume as the primary piston moves in the housing. The primary piston defines an abutment surface which can be driven into abutment with the first secondary piston and the second secondary piston to move the first secondary piston and the second secondary piston. A primary piston spring maintains a restorative force on the primary piston when actuated.

Abstract: This invention relates to a vehicle speed control system, configured with off-road performance features, that will allow the driver to travel at a set speed in a smooth, controlled manner on various unmaintained surfaces without requiring the driver to press the brake or accelerator pedal. The vehicle speed control system uses a brake controller to control the wheel brakes, and an engine controller to control the engine/drivetrain torque, separate or in combination, to maintain a target speed.

Abstract: A method for efficiently decelerating a vehicle having front and rear wheel brakes by isolating the rear wheel brakes and applying pressurized brake fluid only to the front wheel brakes.

Abstract: A vehicular hydraulic braking pump includes a sleeve having an inner bore defining an inner bore surface and a piston having a stop collar and a ramped seal face. The stop collar, ramped seal face, and the inner bore cooperating to define a seal pocket which traps a high pressure seal therein. The ramped seal face provides contact of the high pressure seal to the sleeve inner bore that is proportional to fluid pressure acting on the high pressure seal.

Abstract: An input rod for connecting a vacuum brake booster to a pedal linkage member, wherein the input rod includes a connecting portion adapted to be connected to the pedal linkage member. The input rod further including a hollow body portion formed from a stamped flat blank.

Abstract: A vehicle braking system includes a slip control system operable in an electronic stability control (ESC) mode to automatically and selectively apply the brakes in an attempt to stabilize the vehicle when an instability condition has been sensed. The slip control system is further operable in an adaptive cruise control (ACC) mode to automatically apply the brakes to slow the vehicle in response to a control signal. The slip control system includes a variable speed motor drive piston pump for supplying pressurized fluid pressure to the brakes through a valve arrangement. In the ESC mode, the pump motor operates in an ESC speed range, and in the ACC mode, the pump motor operates in an ACC speed range lower than the ESC speed range. The slip control system further includes an attenuator connected to a pump outlet for dampening pump output pressure pulses prior to application to the brakes. The attenuator includes an elastomeric member located in an attenuator chamber of a housing.

Abstract: A vehicle brake system includes a brake pedal unit (BPU) coupled to a vehicle brake pedal and including an input piston connected to operate a pedal simulator during a normal braking mode, and coupled to actuate a pair of output pistons during a manual push through mode. The output pistons are operable to generate brake actuating pressure at first and second outputs of the BPU. A hydraulic pressure source for supplying fluid at a controlled boost pressure is included. The system further includes a hydraulic control unit (HCU) adapted to be hydraulically connected to the BPU and the hydraulic pressure source, the HCU including a slip control valve arrangement, and a switching base brake valve arrangement for switching the brake system between the normal braking mode wherein boost pressure from the pressure source is supplied to first and second vehicle brakes, and the manual push through mode wherein brake actuating pressure from the BPU is supplied to the first and second vehicle brakes.

Abstract: An electromagnetic valve for use in controlling fluid flow between first and second passageways in a hydraulic valve block includes a valve body. The valve body defines a central axis, has a central opening therethrough, and has a lower end adapted to be inserted into a bore of the valve block. A hollow valve dome is attached to an upper end of the valve body. An armature is axially moveable within the valve dome. A spring biases the armature in one axial direction. A closing element is coupled to a lower end of the armature. An electromagnetic coil coaxially surrounds the armature and is operable to effect axial movement of the armature in an axial direction opposite the one axial direction. A valve seat member is carried by a lower end of the valve body and has an orifice providing fluid flow between the first and second valve block passageways. The valve seat member defines a valve seat that surrounds the orifice and cooperates with the closing element for selectively closing the orifice.

Abstract: This invention relates to a brake caliper adapted for use in a vehicle disc brake assembly and method and apparatus for producing the same. The method for producing the brake caliper comprises the steps of: (a) providing a mold member having at least two mold sections; (b) providing a core member having at least a first male extension which is adapted to form an integrally cast locating recess in the brake caliper which is used as a locating surface for subsequent machining of the brake caliper; (c) disposing the core member in the mold member in a predetermined position; (d) supplying a suitable material to the mold member so as to form a brake caliper within the mold; (e) removing the brake caliper from the mold, wherein the brake caliper includes an integrally cast locating recess formed therein by the first male extension of the core member; and (f) machining the brake caliper using at least the integrally cast locating recess formed therein as a locating surface.

Abstract: An electromagnetic valve (32) for use in controlling fluid flow between first and second passageways (P1, P2) in a hydraulic valve block (4), includes a valve body (51). The valve body (51) defines a central axis (A), has a central opening (51A) therethrough, has a lower end (54) adapted to be inserted into a bore (19) of the valve block (4), and is provided with a lower cylindrical opening (70). An armature (56) is axially movable within the valve body (51) and is biased by a spring in one axial direction (57A). A closing element (88) is carried by a lower end (54) of the armature (56). An electromagnetic coil (64) coaxially surrounds the armature (56) and is operable to effect axial movement of the armature (56) in an axial direction opposite the one direction (57B). A valve seat member (62) is carried by the lower end (54) of the valve body (51) and has an orifice (98) providing fluid flow between the first and second valve block passageways (P1, P2).

Abstract: A vehicular hydraulic braking pump includes a sleeve having an inner bore defining an inner bore surface and a piston having a stop collar and a ramped seal face. The stop collar, ramped seal face, and the inner bore cooperating to define a seal pocket which traps a high pressure seal therein. The ramped seal face provides contact of the high pressure seal to the sleeve inner bore that is proportional to fluid pressure acting on the high pressure seal.

Abstract: This invention refers to an electrically assisted steering system that includes a torque sensor connected to a vehicle steering wheel. The system also includes a torque control ECU that is responsive to torque signals from the torque sensor to generate a motor assist requirement signal. The system further includes a motor control ECU responsive to the motor assist requirement signal to generate a motor control signal. The system additionally includes a steering assist motor responsive to the motor control signal to provide a steering assistance torque to the vehicle steering system. Finally, the system includes a safety domain ECU connected to at least one vehicle operational parameter sensor to generate a torque signal and send the same signal to the torque control ECU. The safety domain ECU is also being in communication with the torque control ECU and the Motor control ECU.